ISO 8601 Timestamp Converter
Convert seamlessly between ISO 8601 format and Unix timestamps. Validate, generate, and format ISO strings, a standard for APIs and data exchange.
ISO 8601 Timestamp Converter
Convert between ISO 8601 formatted date-time strings and Unix timestamps
ISO 8601 Examples
How it works
Enter an ISO 8601 formatted date-time string in the input field. The converter accepts various ISO 8601 formats including basic (20240115T103000Z), extended (2024-01-15T10:30:00Z), with timezone offsets, and with fractional seconds.
The input is parsed and converted to multiple output formats: Unix timestamp (seconds and milliseconds), RFC 2822, RFC 3339, and human-readable date with timezone information.
Invalid or ambiguous inputs are flagged with helpful error messages. Copy any output format with a single click for use in APIs, databases, or documentation.
When You'd Actually Use This
API Development
Convert ISO 8601 timestamps from API responses to Unix time for internal processing.
Database Operations
Transform ISO timestamps to Unix time for storage or comparison in databases.
Log Processing
Parse ISO 8601 timestamps from application logs for analysis and correlation.
Data Integration
Standardize timestamps from multiple sources that use different ISO 8601 variations.
XML/JSON Processing
Handle timestamps from XML Schema (xsd:dateTime) and JSON APIs that use ISO 8601.
Validation
Verify that ISO 8601 timestamps are valid and properly formatted before processing.
What to Know Before Using
ISO 8601 format: Standard format is YYYY-MM-DDTHH:MM:SSZ or with timezone offset. T separates date from time, Z indicates UTC.
Timezone formats: Z = UTC, +05:00 = 5 hours ahead of UTC, -08:00 = 8 hours behind UTC. Offset can also be +0500 without colon.
Fractional seconds: ISO 8601 supports sub-second precision: 2024-01-15T10:30:00.123Z. Milliseconds, microseconds supported.
Week dates: ISO 8601 also supports week format (2024-W03-1 = week 3, day 1). This tool handles standard dates primarily.
Ordinal dates: Day-of-year format (2024-015 = 15th day of 2024) is valid ISO 8601 but less common.
Common Questions
What is ISO 8601 format?
ISO 8601 is the international standard for date/time representation. Format: YYYY-MM-DDTHH:MM:SSZ. Example: 2024-01-15T10:30:00Z.
What does the T mean?
T separates the date portion from the time portion. It's required in ISO 8601 combined date-time format.
What does Z mean?
Z indicates UTC (Zero offset, Zulu time). 2024-01-15T10:30:00Z means 10:30 UTC. Equivalent to +00:00 offset.
Can I use ISO 8601 without timezone?
Yes, but it's "local time" which is ambiguous. Always include timezone (Z or offset) for unambiguous timestamps.
How do I convert to Unix timestamp?
Enter the ISO 8601 string and read the Unix timestamp output. The converter handles all the parsing and timezone conversion.
What about milliseconds?
ISO 8601 supports fractional seconds: 2024-01-15T10:30:00.123Z. The converter preserves and converts fractional seconds.
Is ISO 8601 the same as RFC 3339?
RFC 3339 is a profile of ISO 8601 with some restrictions. They're very similar and often used interchangeably for timestamps.
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